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* Server-side syntax hilighting for all code This PR does a few things: * Remove all traces of highlight.js * Use chroma library to provide fast syntax hilighting directly on the server * Provide syntax hilighting for diffs * Re-style both unified and split diffs views * Add custom syntax hilighting styling for both regular and arc-green Fixes #7729 Fixes #10157 Fixes #11825 Fixes #7728 Fixes #3872 Fixes #3682 And perhaps gets closer to #9553 * fix line marker * fix repo search * Fix single line select * properly load settings * npm uninstall highlight.js * review suggestion * code review * forgot to call function * fix test * Apply suggestions from code review suggestions from @silverwind thanks Co-authored-by: silverwind <me@silverwind.io> * code review * copy/paste error * Use const for highlight size limit * Update web_src/less/_repository.less Co-authored-by: Lauris BH <lauris@nix.lv> * update size limit to 1MB and other styling tweaks * fix highlighting for certain diff sections * fix test * add worker back as suggested Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: Lauris BH <lauris@nix.lv>
95 lines
1.7 KiB
Go
Vendored
95 lines
1.7 KiB
Go
Vendored
package syntax
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import (
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"bytes"
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"strconv"
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"strings"
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"unicode"
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)
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func Escape(input string) string {
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b := &bytes.Buffer{}
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for _, r := range input {
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escape(b, r, false)
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}
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return b.String()
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}
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const meta = `\.+*?()|[]{}^$# `
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func escape(b *bytes.Buffer, r rune, force bool) {
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if unicode.IsPrint(r) {
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if strings.IndexRune(meta, r) >= 0 || force {
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b.WriteRune('\\')
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}
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b.WriteRune(r)
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return
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}
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switch r {
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case '\a':
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b.WriteString(`\a`)
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case '\f':
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b.WriteString(`\f`)
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case '\n':
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b.WriteString(`\n`)
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case '\r':
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b.WriteString(`\r`)
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case '\t':
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b.WriteString(`\t`)
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case '\v':
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b.WriteString(`\v`)
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default:
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if r < 0x100 {
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b.WriteString(`\x`)
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s := strconv.FormatInt(int64(r), 16)
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if len(s) == 1 {
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b.WriteRune('0')
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}
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b.WriteString(s)
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break
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}
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b.WriteString(`\u`)
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b.WriteString(strconv.FormatInt(int64(r), 16))
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}
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}
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func Unescape(input string) (string, error) {
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idx := strings.IndexRune(input, '\\')
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// no slashes means no unescape needed
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if idx == -1 {
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return input, nil
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}
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buf := bytes.NewBufferString(input[:idx])
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// get the runes for the rest of the string -- we're going full parser scan on this
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p := parser{}
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p.setPattern(input[idx+1:])
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for {
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if p.rightMost() {
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return "", p.getErr(ErrIllegalEndEscape)
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}
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r, err := p.scanCharEscape()
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if err != nil {
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return "", err
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}
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buf.WriteRune(r)
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// are we done?
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if p.rightMost() {
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return buf.String(), nil
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}
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r = p.moveRightGetChar()
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for r != '\\' {
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buf.WriteRune(r)
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if p.rightMost() {
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// we're done, no more slashes
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return buf.String(), nil
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}
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// keep scanning until we get another slash
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r = p.moveRightGetChar()
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}
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}
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}
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